I am pondering a similar question. I have two pair of shorty fendewrs I want to use and it dawned on the other day the reason they never seem to 'fit' is due to the Chorus brakes I keep trying to use. So will an older style caliper like a 600EX be wider? Reach is a issue too
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“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk